package com.dude.utils;

import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class BitmapManager 
{
	public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId, int reqWidth, int reqHeight) 
 	{
 	    // First decode with inJustDecodeBounds=true to check dimensions
 	    final BitmapFactory.Options options = new BitmapFactory.Options();
 	    options.inJustDecodeBounds = true;
 	    BitmapFactory.decodeResource(res, resId, options);

 	    // Calculate inSampleSize
 	    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

 	    // Decode bitmap with inSampleSize set
 	    options.inJustDecodeBounds = false;
 	    return BitmapFactory.decodeResource(res, resId, options);
 	}
 	
 	public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight)
 	{
 	    // Raw height and width of image
 	    final int height = options.outHeight;
 	    final int width = options.outWidth;
 	    int inSampleSize = 1;
 	
 	    if (height > reqHeight || width > reqWidth) {
 	        if (width > height) {
 	            inSampleSize = Math.round((float)height / (float)reqHeight);
 	        } else {
 	            inSampleSize = Math.round((float)width / (float)reqWidth);
 	        }
 	    }
 	    return inSampleSize;
 	}
 	
	public static Bitmap decodeBitmapFromFile(String path, int reqWidth, int reqHeight) 
 	{
 	    // First decode with inJustDecodeBounds=true to check dimensions
 	    final BitmapFactory.Options options = new BitmapFactory.Options();
 	    options.inJustDecodeBounds = true;
 	    BitmapFactory.decodeFile(path, options);

 	    // Calculate inSampleSize
 	    options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);

 	    // Decode bitmap with inSampleSize set
 	    options.inJustDecodeBounds = false;
 	    return BitmapFactory.decodeFile(path, options);
 	}
}
